Machine for jointing- staves



UNITED sTATEs E. VALENTINE AND A. BRADWAY; or MoNSoN, MASSACHUSETTS'.

MACHINE FOR JOIN'I'ING STAVES. 'y

Specification of Letters Patent 1\T To all whom t may concern:

Be it known that we, ELIJAH VALENTINE and ABEL BRADWAY, o-f Monson, inthe county of I-Iampden and State of Massachusetts, have invented a newand Improved Machine for Jointing Sit-aves; and we do hereby declarethat the following is a full and exact description thereof, referencebe` ing had to the accompanying drawings, making part of thisspecification,` Figure l being a plan of the machine; 2, a verticalsection thereof, in the line @o .fr of Fig. l; Fig. 3, a verticalsection in the line y g/ of Fig. l; Fig. 4, view of a modification of apart detached, and Fig. 5 view of another ortion detached.

Like letters designate corresponding parts i in all the figures.

Immediately under a thin ,platform B, which extends lengthwise over thecentral portion of the frame of the machine, passes, in the directionshown by 'the arrows, an endless belt C, and runs around rollers E, E,at the ends of the machine. A channel a, is cut through saidplatformover the middle of the belt, in the fo-rm vof a double curve, winding inopposite directions at the two ends, and with about the same degree ofcurvature as the ordinary curve to be. given to the edges of the staves.Through this channel move spurs my, m, and are made to follow itswindings by being attached to said endless belt by means of arms andjoint-pins t, t, (Figs. l, 2, and 5,); which, project-ing above theplatform, drive the staves forward, as they are yplaced thereon. On eachside of said channel and at a dis'- tance therefrom less than the whole,but more than half the, width ofany stave to be jointed, is Secured araised ledge A, of about the thickness of a stave, the borders onopposite sides thereof being nearly or exactly parallel with the channeland with each other, and alternately concave and conveX, as shown inFig. l. The stave is first pressed against one concave border by springsZ9, b, in order to joint the side thereof thus brought in contact; andis thence driven over against the other concave border by springs o, o,for jointing its other side. It is also kept down upon the platform B,by springs df, d, &c., or other suitable means. In front of each concaveborder is situated a thin, uniformly flexible strip of metal 11 o.10,687, dated March 28, 1854.

one end of which is secured to the ledge, and the other end to anadjusting lever p. By straightening or bending said stri with itsadjusting lever, its curvature, an consequently that of the stave, willbe regularly varied, so that any degree of bilge may thereby be given tothe Cask. Only one of said stripsv is represented in the drawings; ltheother being arranged in a precisely similar manner. Near the middle ofthe irst concave is situated a small circular saw e, (or otherequivalent cutter,) whose arbor g, is inclined, (as shown in Fig. 3,) soyas to give a suitable bevel to the stave to form the proper radialjoint in the Cask. A second, finer saw j", whose arbor z., hasthe sameinclination as the arbor g, is situated in the concave a little behindthel first saw e, and serves to smooth the edge first made by said saw`e. Instead ofa saw f, we contemplate using a vBramah wheel Fig.y 4,who-se cutters s, s, &c., smooth the edge of the staves. As soon as thestave has passed the first `concave and becomes jointed on one edge, itis pressed over against the other concave by the springs c, c, where itsother edge is jointed by two similar saws, or a saw and BramahY wheel,Z, and 5, whose arbors j, and 7c, have the same inclination as .thoseofthe joint st-aves for all sizes of casks. When the second edge of thestave has been jointed, it is pushed along and discharged from themachine by the belt C, and' another stave brought forward. The power isapplied to 7c, by bands, as shown in the drawings.

What we claim as our invention and desire to Secure by Letters Patent,isv 1. The combination of the alternate, reversely-curved ledges A, A,on opposite sides of the doubly-curved channel a, with the springs b, b,and o, o, placed opposite to their concave portions, for the purpose ofdirecting the stave', alternately to the jointers arranged along saidconcaveV portions of the ledges, with a properly curved motion forjointing both edges of the staves set forth. t

2. We also claim the unlformly flexible, metallic strips n, n, at theSides of the reto a suitable form, substantially as herein' saws e, and7". All of said arbors'may be made adjustable in inclination, soas1to'785 9o i a lshaft D, (Fig. 2,) and thence communicated to therollers E, E, and arbors g, 71,3',

machine for jointing staves signed by us this twenty second day of March1853.

ELIJAH VALENTINE; ABEL BRADWAY.

cess B, just in front of the cutters, in combination With the adjustinglever p, for the purpose of enabling the curvature of the stave to bevaried "by tightening or slaekenl ing the said metallic strips, and thusvarying the curved sides of the recess', substantially as herein setforth.

The above specification of our improved l Witnesses:

lVIERRiLL BARLOW,

CHAS. C. KNIGHT.

